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GHSA-8vfg-2r28-hvhjmedium6.3

Crass: Non-ASCII characters cause superlinear CPU consumption

Impact

When parsing an input containing non-ASCII characters, inefficiencies in how Crass tracks the positions of multi-byte characters result in superlinear parsing time. An attacker-controlled input consisting of many non-ASCII characters could cause excessive CPU consumption and potentially denial of service.

Source excerpt · OSV

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

crass RubyGems
Affected range Recorded fix
Earlier releases before 1.0.7Ecosystem versions1.0.7

Version evidence: OSV · GHSA-8vfg-2r28-hvhj

View original version evidence (12 explicit versions)

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

rgrove · GitHub_M

crass

1 range
GitHub_M version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

< 1.0.7

unaffected

unknown

Other versions: unknown

Original source description

Impact

When parsing an input containing non-ASCII characters, inefficiencies in how Crass tracks the positions of multi-byte characters result in superlinear parsing time. An attacker-controlled input consisting of many non-ASCII characters could cause excessive CPU consumption and potentially denial of service.

Patches

This is fixed in Crass 1.0.7.

Workarounds

Avoid passing non-ASCII input to Crass. Or cultivate patience.

Inside the record

Evidence available

Package identity
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-61848

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-400 ↗

CWE-400: Uncontrolled Resource Consumption

GitHub_M

Related →
Contributing organizations · 1
GitHub_M

Assigning organization

2026-10-30

What changed

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References

4 sources
github.com/rgrove/crass/security/advisories/GHSA-8vfg-2r28-hvhj
Security advisoryGitHub_M
github.com/rgrove/crass
Source reference
github.com/rgrove/crass/releases/tag/v1.0.7
Release notesGitHub_M
github.com/rgrove/crass/commit/da29664648bf80a97a6439e030a4814291c9afa5
PatchGitHub_M